Keymap: A Planck style keymap with iris flair (#4677)
* A Planck style keymap with iris flair
- Re-arrange layers to be more planck like.
- move backspace to right thumb
- replace backspace with minus, more useful for coding
- replace center keys with brackets
- MT(MOD_LCTRL and ESCAPE)
- Use QMK-DFU for bootloader
- add a soft reset to keymap